The purchasing decision process is very complex and varies greatly from person to person.
Personally I do enjoy the experience of using overly-polished equipment, even if the basic function is the same. I look for the luxurious experience too when making a purchase and I'm willing to pay for it. I think a lot of it has to do with my early years, when I had a 25W fixed temp Antex without a stand for more than 15 years. Then coming out of that old lab and into the ones with £800k logic analysers run by people with the 'let's buy both to see which fits better' mentality, you can see why I am spoiled.
However, technical specifications will always come first. Quick example is the Dremel vs Proxxon rotary hand tools. The Dremel is prettier and popular, but the Proxxon is mechanically superior. I have the Proxxon.
Reflecting upon my purchasing decisions, extracting the most value for money is not as important for me as having a tool that I can rely on for many years. The more mature the technology is, the more likely I am to spend more money on something. You could say that I consider my tools as investments. Having said that, I won't buy a GHz scope for audio. So there is some realism in my decisions. Also, I do read the manuals extensively and maintain my tools. My Fluke 289 still has the screen protection film on since 2007.
You mentioned a perfect example of this, screwdrivers. A screw is a screw and the screwdriver will not become obsolete during our lifetimes. So you can spend more on quality heat treated alloys. There is absolutely nothing that I find more annoying than trying to work on something using malfunctioning equipment. I bought a 40-pin ZIF socket from ebay the other day and tried to solder it. The plating on the pins was poor, and the solder did not wet. Frustrated, I threw the socket in the bin feeling great satisfaction. I am also notorious for literally throwing away in the bin the £5 multimeters of my colleagues when I am helping. I say, 'There, now we can be sure this bad measurement and future ones are not due to the multimeter'.
There you go, my buyer's profile.